# Buffalo Deep Mine

- **MSHA mine ID:** 4609528
- **Status:** Abandoned
- **Type / commodity:** Underground / Coal (Bituminous)
- **Location:** Logan, WV
- **Operator:** Hampden Coal LLC
- **Controller:** Sev.en Global Investments a.s.
- **Public source rows linked:** 2,958
- **Source coverage:** 17 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Sev.en Global Investments a.s. (0158381) → Hampden Coal LLC (0135215) → Buffalo Deep Mine (4609528)**

Current identity source: `msha-mines`. This is a current snapshot, not a historical claim.

## Controller and operator valid-time history

- **Blackhawk Mining LLC → Hampden Coal LLC:** 2017-03-15 through 2020-05-31; derived from co-tenure at mine 4609528; source `msha-controller-operator-history`.
- **Sev.en Global Investments a.s. → Hampden Coal LLC:** 2020-06-01 through current/open; derived from co-tenure at mine 4609528; source `msha-controller-operator-history`.

- History rows: 2
- Typed edges: 5
- Interval anomalies: 0
- Valid-time bounds: inclusive; date granularity; null end means open-ended in the upstream history row; not independent proof of present control.
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00.

## Assessment signals

1. **SAFETY — 0 since 2021:** Accidents and injuries 25 historical accident/injury rows; 0 coded fatalities and 2,428 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 346 violation rows across the full record; 73 carry an S&S flag and $212,704 appears in current assessed amounts.
3. **HEALTH — 2K samples:** Occupational health samples 1,522 coal dust; 66 coal quartz; 37 noise. 0 personal-sample rows have a published C/E ratio above 1; 9 noise rows have an action-level or PEL dose above 100%. These are separate measures, not a silica exceedance count. Silica results and sample status are shown separately.
4. **PRODUCTION — 0 tons:** Quarterly production and employment 746 employee hours and 1 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 356 linked rows:** Contests, conferences and decisions 173 contested-violation rows, 173 civil-penalty docket/decision rows, and 10 conference records linked by issuance number.
6. **CONTRACTORS — 1 linked entities:** Contractors Contractors are linked through this mine’s violation or accident records. Their production and hours cover all their operations, so they are not included in this mine’s totals.
7. **INSPECTIONS — 0 since 2021:** Inspections 45 inspection events and 3K published inspection hours across the historical record.

## EIA annual operating context

No matched record in the 2024 EIA coal-public workbook. This may be inapplicable for a non-coal operation.

## Recent Title 30 crosswalk

Snapshot current through 2026-08-19.

- **30 CFR 75.605 — Clamping of trailing cables to equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-G/section-75.605
- **30 CFR 75.517 — Power wires and cables; insulation and protection.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-F/section-75.517
- **30 CFR 75.515 — Cable fittings; suitability.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-F/section-75.515
- **30 CFR 75.503 — Permissible electric face equipment; maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-F/section-75.503
- **30 CFR 75.342 — Methane monitors.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.342
- **30 CFR 75.400 — Accumulation of combustible materials.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-E/section-75.400
- **30 CFR 75.512 — Electric equipment; examination, testing and maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-F/section-75.512
- **30 CFR 75.1722 — Mechanical equipment guards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-R/section-75.1722

## Source coverage

- **Accident, Injuries, and Illnesses:** 25 rows; 2017-05-11 through 2019-10-20; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2020-07-01 through 2020-07-01; source ID `msha-addresses`
- **Assessed Violations:** 336 rows; 2017-05-10 through 2019-09-25; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 173 rows; 2017-12-14 through 2020-03-10; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 1,522 rows; 2017-06-14 through 2019-10-07; source ID `msha-coal-dust-samples`
- **Conferences:** 10 rows; 2017-06-28 through 2019-04-02; source ID `msha-conferences`
- **Contested Violations:** 173 rows; 2017-05-10 through 2019-09-25; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 161 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 33 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 2 rows; 2017-03-15 through 2017-03-15; source ID `msha-controller-operator-history`
- **Inspections:** 45 rows; 2017-04-12 through 2020-07-01; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 21 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 6 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 37 rows; 2017-06-27 through 2018-12-04; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 66 rows; 2017-06-14 through 2019-09-24; source ID `msha-quartz-samples`
- **Violations:** 346 rows; 2017-05-10 through 2019-09-25; source ID `msha-violations`

## Caveats

- This is public-record decision support, not legal advice or an official MSHA record.
- Missing data can indicate no event, publication delay, an unresolved identity, or inapplicability.
- Contractor production data is entity-level and is not attributed to this mine.

## Alternate representations

- HTML: `/mines/buffalo-deep-mine-4609528`
- JSON: `/api/v1/mines/buffalo-deep-mine-4609528`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4609528/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4609528/relationships`
- MCP resource: `mine://4609528/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`